package com.lyn.gulimall.auth.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.lyn.common.constant.AuthServerConstant;
import com.lyn.common.utils.HttpUtils;
import com.lyn.common.utils.R;
import com.lyn.gulimall.auth.feign.MemberFeignService;
import com.lyn.common.vo.MemberRespVo;
import com.lyn.gulimall.auth.vo.SocialUser;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

/**
 * 处理社交登录请求
 */
@Slf4j
@Controller
public class OAuth2Controller {

    @Autowired
    MemberFeignService memberFeignService;

    @GetMapping("/oauth2.0/weibo/success")
    public String weibo(@RequestParam("code")String code, HttpSession session) throws Exception {
        Map<String,String> header=new HashMap<>();
        Map<String,String> query=new HashMap<>();

        Map<String,String> map=new HashMap<>();
        map.put("client_id","2349850601");
        map.put("client_secret","ce35f4ff08547658518393aa57edccb9");
        map.put("grant_type","authorization_code");
        map.put("redirect_uri","http://auth.gulimall.com/oauth2.0/weibo/success");
        map.put("code",code);
        //https://api.weibo.com/oauth2/authorize?client_id=3142799039&response_type=code&redirect_uri=http://gulimall.com/success
        //https://api.weibo.com/oauth2/access_token?client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET&grant_type=authorization_code&redirect_uri=YOUR_REGISTERED_REDIRECT_URI&code=CODE
        //1、根据code换取accessToken
        HttpResponse response = HttpUtils.doPost("https://api.weibo.com", "/oauth2/access_token", "post", header, query, map);

        //2、处理
        if(response.getStatusLine().getStatusCode()==200){
            //获取到accessToken
            String json = EntityUtils.toString(response.getEntity());
            SocialUser socialUser = JSON.parseObject(json, SocialUser.class);

            //知道当前是哪个社交用户
            //1）、当前用户如果是第一次进网站，自动注册进来（为当前社交用户生成一个会员信息，以后这个社交账号就对应指定的会员）
            R oauthlogin = memberFeignService.oauthlogin(socialUser);
            if(oauthlogin.getCode()==0){
                MemberRespVo data = oauthlogin.getData("data", new TypeReference<MemberRespVo>() {
                });
                System.out.println("登录成功：用户信息"+data);
                log.info("登录成功；用户：{}",data.toString());
                //2、登录成功就跳回首页
                //todo 1、默认发的令牌。session=dsajkdjl。作用域：当前域；
                //todo 2、使用json的序列化方式来序列化对象到redis
                session.setAttribute(AuthServerConstant.LOGIN_USER,data);
                return "redirect:http://gulimall.com";
            }else{
                return "redirect:http://auth.gulimall.com/login.html";
            }
        }else{
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }
}
